if (document.images)
    {
      preload_image_object = new Image();
      image_url = new Array();
      image_url[0] = "/images/main.png";
      image_url[1] = "/images/2.png";
      image_url[2] = "/images/3.png";
      image_url[3] = "/images/4.png";
      image_url[4] = "/images/5.png";
      image_url[5] = "/images/1.png";
      image_url[6] = "/images/boton1.png";
      image_url[7] = "/images/boton2.png";
	  image_url[8] = "/images/home.png"; 
       var i = 0;
       for(i=0; i<=8; i++) 
         preload_image_object.src = image_url[i];
    }